Skiving machine



SKIVING MACHINE Filed Feb. 11, 1924 I82 Fag-l Inventor Httarney PatentedJuly 16, 1929.

UNETED S'lATES ANDREW R. RIDDERSTROM,

1,721,052 PATENT OFFICE.

OF NAHANT, MASSACHUSETTS, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO UNITEDSHOE MACHINERY CORPORATION, PATERSON, NEW JERSEY, CORPORATION OF NEWJERSEY.

SKIVING MACHINE.

The present invention relates to skiving machines, and more particularlyto ma chines, in which a shoe upper or other sheet material is advancedby a feed roll and a feed disk to a rotating skiving knife which cuts ascarf in the margin of the material.

An object of the invention is toprovide an improved deflector for thechips which are cut from the material.

A further object is to provide an improved deflector for the body of thematerial.

A further object is to provide an improved knife guard.

A further object is to provide an im- 5 proved guard for protecting theoperative parts of the machine from the cii'ects of dust and the like.

Another object is to provide an improved guard for protecting theoperator from oil or other particles that might be spattered bycentrifugal action during the operation of the machine.

Still another object is to provide an improved guard for preventing theoperator r from coming into contact with other moving parts of themachine.

Other and further objectswill be GX- plained hereinafter and will beparticularly pointed out in the appended claims.

In the accompanying drawings, Fig. 1 is a longitudinal, central,vertical section of a skiving machine embodying the present in ventionin its preferred form; Fig. 2 is a detail elevation, about half waybetween a front elevation and a side elevation, parts ofthe machine, asthe feed disk, being removed, and other parts broken away, forclearness; F 3 is a section taken upon the line3-8 of Fig. 2, looking inthe direction of the arrows; and Fig. "1 is a section taken upon theline 4; 1 of Fig. 2, looking in the direction of the arrows.

The invention is for illustrative purposes shown in the accompanyingdrawings as embodied in a machine havingmany features in common with amachine constituting'the subject matter of a copendingapplication,Serial No. 521,239, filed December 9, 1921. The frame of the machine isprovided with an overhanging arm or head 22 that carries a disk-shapedskiving knife 185 and a feed disk 1 13. The feed disk cooperates with afeed roli to feed material to the knife. 'ii'ae customary pressei Jaehas been omitted from the drawings in order not to complicate thedisclosure unnecessarily. A projection or lug 26, provided with a mainbearing 27, is fastened to the front end of the head 22 by screws 28. Ashaft 32 is journaled in the bearing 27. The feed roll and the feed diskare driven from the shaft 32, asv is explained more fully in theaboveidentified application. The feed-roll driving mechanism is notillustrated herein. The feed disk is driven from a worm 135 that issecured to the shaft 32 and that meshes with a worm gear 136 that iskeyed or bolted to the upper end of the feed-disk shaft 137. The shaft137 is journaled in an adjustable bearing 1 10. The hearing may beadjusted by means of a thumb nut 251, as is fully described inaeopending application Serial No. 684,437, filed January 1, 192 1. Thefeed disk 143 normally presents an angular working relation with respectto the feedroll 95, and thedriving gearing is such that both axial andtransverse movement may be had between the gears without disengagementthereof, either for adjustments or when per forming work, the teeth ofthe gear 136 merely slipping through the teeth of the worm 135. v

The knife 185 is carried in a bracket 170 that is angularly adjustableabout a rod 161 so as to provide for skiving scarfs of different anglesin the margin of the material. The angular adjustment may be effectedthrough a. finger or lug 188 that projects from the knife bracket 170,and that is yieldingly engaged by a dog 17 through the action of aspring 189. The spring 189 thus tends to maintain the lug 188 inengagement with a limiting step 190. The position of the step 190 may beadjusted by an adjusting screw 191 that is tapped in the head 22 of themachine and that engages a shoulder (not shown) of the stop 190.Adjustment of the screw 191 will therefore result in rotatably adjustingthe angular position of the knife The nits is directly driven new a belt1 acting on a pulley 4;, and exerting a force upon the knife shaft inthe same angular di rection as the spring 189. The upper end of theknife shaft is provided with a worm 182. This worm meshes with the wormportion of an elongated pinion 163 that .is freely rotablc upon thestationary rod 16a. The worm portion of the pinion 163, with which theworm 182 meshes, is at the rear of this pinion. The pinions 1G3 and 182are maintained in meshing engagement, irrespective of the angularlyadjusted position of the bracket 170 and the skiving knife 185 that is'arried thereby. The front portion of the pinion 163 constitutes aspiral gear that meshes with a spiral gear 162, shown to the right ofthe fee l-shaft bearing 27 in Fig. 1. The gear 162 is mounted upon ahollow shaft 2 through which the feed shaft 32 extends. The hollow shaftis freely rotatable with respect to the feed shaft 32, but the twoshafts are adapted to be clutched together, to rotateas a unit, asdescribed in the aboveidentiiied application, Serial No. 521,239.

The foregoing brief description of the machine of the aforementionedapplications will suflice as a setting for the features of novelty thatare now to be explained, and it will be understood that the saidfeatures of novelty are not restricted to any particular machine, themachine of the said applications being chosen for illustrative purposesonly, to make clearer the description that is now to follow,

A member 51 is secured by screws 53 or the like to the knife bracket170. The member 51 depends towards the knife 185, and is provided withan opening 55 through Which the pulley l projects. The member 51 isprovided with two ears 57 and 59 that curve part way around the pulley1, on both sides of the opening 55. A guard 61 is secured to the ear 59in any desired manner, as by means of screws 63. The guard 61 curvesaround the pulley a, at 65, and extends back at 67 to cover a largeportion of the belt, so as to protect the operator from contact with thepulley and the belt. A knife guard 69 is secured by screws 71 to thelower portion '73 of the member 51. Slots 7 5 in the knife guard 69.,through which the screws 71 extend permit adjustment of the knife guard.A deflector 77 is shown secured to the ear 59 of the member 51 by thesame screws 63 that hold the guard 61, and serves to deflect upward andoutward the chips 79 as they are cut from the body 81 of the material bythe knife 185, is illustrated in Fig. 2. The body 81 of the material isdeflected downward, away from the operating instrumentalit-ies of themachine, by a deflector 83 that is secured to the knife guard 69, by ascrew or the like 85, in position beyond the feed roll in the line offeed. A pin 87,

that is rigid with either the knife guard 69 or the deflector 83, passesthrough an opening in die other of the said two members to preventaccidental turning movement of the deflector 83 about the screw 85.

The oil that surrounds the knife shaft has a tendency to leak to thebottom of the shaft when the machine is idle, and to spatter outward, bycentrifugal action, when the machine is again started. This is verydisagreeable to the operator who is subjected to this oil spatter-lug.The knife guard 69 and the deflector 77 are positioned so as to receivethe oil so scattered, thus eliminating this disagreeable feature. Theknife guard 69 and the deflector 77 serve also as a dust protector forthe knife shaft and the parts contiguous thereto.

The description of many portions of the machine an understanding ofwhich is not essential to an understanding of the present invention haspurposely been omitted, and many parts of the machine have purposely notbeen illustrated in order not to distract the attention from thefeatures of essential novelty. Fuller explanation of such portions ofthe machine will be found in the copending applications referred toabove. It will be clear that the features of novelty may be embodied inother machines, and in machines of other types, and that modificationsmay be made therein by persons skilled in the art, without departingfrom the spirit and scope of the invention, as defined in the appendedclaims.

\Vhat is claimed is:

1. A machine of the class described having, in combination, a rotaryknife, means for rotating the knife, the knife being constructed andarranged to cut material at a predetermined position in the line offeed, means for feeding the material to the pre determined position soas to be cut by the knife, and a deflector extending a substantialdistance beyond the predetermined position in tl e line of feed in adirection at a substantial angle to the plane of rotation of the knifefor positively deflecting the body of the material a substantialdistance a 'ay from the knife in a direction at a substantial angle tothe plane of rotation of the knife after the material has been fedbeyond the feeding means and a chip has been cut therefrom.

2. A machine of the class described having, in combination, a knife,means for feeding material to the knife, a guard for the knife, and adeflector carried by the guard extending a substantial distance beyondthe feeding means in the line of feed for deflecting the body of thematerial away from the knife after a chip has been cut therefrom by theknife.

8. A skiving machine having, in combination, a rotary knife, means forrotating the knife, the knife being constructed and arranged to cutmaterial at a predetermined position in the line of feed, a feed rolland a feed disk for feeding the material to the predetermined. positionso as to be cut by the knife, and a deflector extending a substantialdistance beyond the predetermined position in the line of feed in adirection at a substantial angle to the plane of rotation of the knifefor positively deflecting the body of the material a substantialdistance away from the knife in a direction at a substantial angle tothe plane of rotation of the knife after the material has been fedbeyond the predetermined position and a chip has been cut therefrom bythe knife.

4. A skiving machine having, in combination, a knife, means for feedingmaterial to the knife, means for driving the knife, a supporting member,a guard for the driving means supported by the member, and a deflectorfor deflecting the chips cut from the material carried by the member.

5. A machine of the class described having, in combination, a rotaryknife, means for rotating the knife, the knife being constructed andarranged to cut the material at a predetermined position in the line offeed, means for feeding the material to the predetermined position so asto be cut by the knife, a deflector on one side of the plane of rotationof the knife extending a substantial distance beyond the predeterminedposition in the line of feed in a direction at a substantial angle tothe plane of rotation of the knife for positively deflecting the body ofthe material on the said one side of the plane of rotation of the knifea substantial distance away from the knife in a direction at asubstantial angle to the plane of rotation of the knife after thematerial has been fed beyond the feeding means and a chip has been outtherefrom, and a deflector on the other side of the plane of rotation ofthe knife extending in a direction at a substantial angle to the planeof rotation of the knife for deflecting the chips cut from the materialon the said other side of the plane of rotation of the knife asubstantial distance away from the knife in a direction at a substantialangle to the plane of rotation of the knife.

(3. A skiving machine having, in combination, a knife, means for feedingmaterial to the knife, a supporting member having two cars, a deflectorfor deflecting the chips cut from the material carried by one of theears, and a deflector for deflecting the body of the material carried bythe other car.

7. A skiving machine having, in combination, an oil-covered shaft havinga skiving knife for skiving the margin of sheet ma terial, means forrotating the shaft, a feed roll and a feed disk for feeding the materialto the knife, a guard for the knife, and a deflector for deflecting thechips cut from the material, the guard and the deflector beingconstructed and arranged to receive the oil as it is spattered outward,by centrifugal action, during the rotation of the shaft.

8. A skiving machine having, in combination, a knife bracket, a knifecarried by the bracket, a feed roll and a feed disk for feeding materialto the knife, a deflector for deflecting the chips cut from the materialcarried by the bracket, a guard for the knife carried by the bracket, adeflector for deflecting the body of the material carried by the knifeguard, and means for adjusting the bracket, the knife, the deflectorsand the guard as a unit.

9. A skiving machine having, in combination, a knife, a feed roll and. afeed disk for feeding material to the knife, a pulley for driving theknife, a belt for driving the pulley, a supporting member having an openthrough which the pulley projects and two cars on both sides of theopening, a guard for the belt secured to one of the ears, a deflectorfor deflecting the chips cut from. the material secured to the said oneear, a guard for the knife secured to the other car, and a deflector fordeflecting the body of the material secured to the knife guard.

10. A skiving machine having, in combination, a shaft having a skivingknife for skiving the margin of sheet material, means for rotating theshaft, a feed roll and a feed disk for feeding the material to theknife, a guard for the knife, and a deflector for deflecting the chipscut from the material, the guard and the deflector being constructed andarranged to protect the shaft against dust.

In testimony whereof, I have hereunto subscribed my name this 9th day ofFebruary, 1924C.

ANDREW .R. RIDDERSTROM.

